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41 lines
1.8 KiB
Haskell
41 lines
1.8 KiB
Haskell
{-# LANGUAGE DataKinds #-}
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module InterpreterSpec where
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import Category
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import Data.Functor.Foldable
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import Data.RandomWalkSimilarity
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import Data.Record
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import Diff
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import Info
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import Interpreter
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import Patch
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import Prologue
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import Syntax
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import Term.Arbitrary
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import Test.Hspec
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import Test.Hspec.QuickCheck
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spec :: Spec
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spec = parallel $ do
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describe "interpret" $ do
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let decorate = defaultFeatureVectorDecorator (category . headF)
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let compare = ((==) `on` category . extract)
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it "returns a replacement when comparing two unicode equivalent terms" $
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let termA = cofree $ (StringLiteral .: RNil) :< Leaf ("t\776" :: Text)
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termB = cofree $ (StringLiteral .: RNil) :< Leaf "\7831" in
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stripDiff (diffTerms wrap compare diffCost (decorate termA) (decorate termB)) `shouldBe` replacing termA termB
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prop "produces correct diffs" $
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\ a b -> let diff = stripDiff $ diffTerms wrap compare diffCost (decorate (toTerm a)) (decorate (toTerm (b :: ArbitraryTerm Text (Record '[Category])))) in
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(beforeTerm diff, afterTerm diff) `shouldBe` (Just (toTerm a), Just (toTerm b))
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prop "constructs zero-cost diffs of equal terms" $
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\ a -> let term = decorate (toTerm (a :: ArbitraryTerm Text (Record '[Category])))
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diff = diffTerms wrap compare diffCost term term in
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diffCost diff `shouldBe` 0
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it "produces unbiased insertions within branches" $
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let term s = decorate (cofree ((StringLiteral .: RNil) :< Indexed [ cofree ((StringLiteral .: RNil) :< Leaf s) ]))
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root = cofree . ((pure 0 .: Program .: RNil) :<) . Indexed in
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stripDiff (diffTerms wrap compare diffCost (root [ term "b" ]) (root [ term "a", term "b" ])) `shouldBe` wrap (pure (Program .: RNil) :< Indexed [ inserting (stripTerm (term "a")), cata wrap (fmap pure (stripTerm (term "b"))) ])
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